alert('drop table ' + this._fullPath + ' ' + e.message);

          });

      }

    }

​

  }

​

  function getUniqueKey(): string {

    var key = window.location.href;

​

    key = key.split('?')[0];

    key = key.split('#')[0];

​

    if (key.length > 'index.html'.length

      && key.slice(key.length - 'index.html'.length).toLowerCase() === 'index.html')

      key = key.slice(0, key.length - 'index.html'.length);

​

    key += '*';

​

    return key;

  }

​

  function getOpenDatabase() {

    return typeof openDatabase == 'undefined' ? null : openDatabase;

  }

​

  function safeParseInt(str: string): number {

    if (!str) return null;

    if (typeof str === 'number') return <number><any>str;

    try {

      return parseInt(str);

    }

    catch (e) {

      return null;

    }

  }

​

  function appendScriptElement(doc: typeof document): HTMLScriptElement {

    var s = doc.createElement('script');

    s.setAttribute('type', 'text/data');

    doc.body.insertBefore(s, doc.body.children[0]);

    return s;

  }

​

  function removeScriptElement(script: HTMLElement) {

    var keepElement: boolean;

    if (script.tagName.toLowerCase() === 'style') {

      keepElement = true;

    }

    else if (script.tagName.toLowerCase() === 'script') {

      var type = script.getAttribute('type');

      if (!type || type.indexOf('javascript') > 0) {

        keepElement = true;

      }

      else {

        if (script.id === 'page-template'

          || script.id === 'folder-template'

          || script.id === 'file-template')

          keepElement = true;

      }

    }

​

    if (keepElement) {

      script.removeAttribute('data-path');

    }

    else {

      script.parentElement.removeChild(script);

    }

  }

​

  function loadPropertiesFromDom(

    tableName: string,

    script: HTMLScriptElement,

    properties: any,

    executeSql: ExecuteSqlDelegate) {

​

    function afterCreateTable(after: () => void) {

      if (executeSql) {

        executeSql(

          'CREATE TABLE "' + tableName + '" ( name TEXT, value TEXT)', [],

          (tr, r) => {

            after();

          },

          null);

      }

      else {

        after();

      }

    }

​